Help Chapter 19 Example E-commerce!

[José]

Hello Mr. Larry Ullman.

 

I am reading your book  PHP and MySQL for Dynamic Web Sites: Visual QuickPro Guide , and i´m beginner of php language and a big fan of your work, that is well done, with a clear language and explanations well explicated.

Althought i follow all the steps of the chapter 19 of the Example of E-commerce, my database of E-coomerce  gave me some errors (see the attached file). Also I put the scripts of the example of your book.

 

I don´t know how to solve the problem, please could you help me?

 

I using the xampp software and phpmyadmin to build the database of the e-commerce.

 

Best regards.

 

Ps.: Below i sent you the scripts of the tables of the database.

 

José Moreira

 

 

 

-- phpMyAdmin SQL Dump
-- version 5.0.2
-- https://www.phpmyadmin.net/
--
-- Host: 127.0.0.1
-- Generation Time: Jan 07, 2021 at 08:49 PM
-- Server version: 10.4.14-MariaDB
-- PHP Version: 7.2.33

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
START TRANSACTION;
SET time_zone = "+00:00";

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8mb4 */;

--
-- Database: `ecommerce`
--

-- --------------------------------------------------------

--
-- Table structure for table `artists`
--

CREATE TABLE `artists` (
  `artist_id` int(10) UNSIGNED NOT NULL,
  `first_name` varchar(20) DEFAULT NULL,
  `middle_name` varchar(20) DEFAULT NULL,
  `last_name` varchar(40) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4;

-- --------------------------------------------------------

--
-- Table structure for table `customers`
--

CREATE TABLE `customers` (
  `customer_id` int(10) UNSIGNED NOT NULL,
  `email` varchar(60) NOT NULL,
  `pass` char(40) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4;

-- --------------------------------------------------------

--
-- Table structure for table `orders`
--

CREATE TABLE `orders` (
  `order_id` int(10) UNSIGNED NOT NULL,
  `customer_id` int(10) UNSIGNED NOT NULL,
  `total` decimal(10,2) UNSIGNED NOT NULL,
  `order_date` timestamp NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp()
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- --------------------------------------------------------

--
-- Table structure for table `order_contents`
--

CREATE TABLE `order_contents` (
  `oc_id` int(10) UNSIGNED NOT NULL,
  `order_id` int(10) UNSIGNED NOT NULL,
  `print_id` int(10) UNSIGNED NOT NULL,
  `quantity` tinyint(3) UNSIGNED NOT NULL DEFAULT 1,
  `price` decimal(6,2) UNSIGNED NOT NULL,
  `ship_date` datetime DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- --------------------------------------------------------

--
-- Table structure for table `prints`
--

CREATE TABLE `prints` (
  `print_id` int(10) UNSIGNED NOT NULL,
  `artist_id` int(10) UNSIGNED NOT NULL,
  `print_name` varchar(60) NOT NULL,
  `price` decimal(6,2) UNSIGNED NOT NULL,
  `size` varchar(60) DEFAULT NULL,
  `description` varchar(255) DEFAULT NULL,
  `image_name` varchar(60) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4;

--
-- Indexes for dumped tables
--

--
-- Indexes for table `artists`
--
ALTER TABLE `artists`
  ADD PRIMARY KEY (`artist_id`),
  ADD UNIQUE KEY `full_name` (`last_name`,`first_name`,`middle_name`);

--
-- Indexes for table `customers`
--
ALTER TABLE `customers`
  ADD PRIMARY KEY (`customer_id`),
  ADD UNIQUE KEY `email` (`email`),
  ADD KEY `login` (`email`,`pass`);

--
-- Indexes for table `orders`
--
ALTER TABLE `orders`
  ADD PRIMARY KEY (`order_id`),
  ADD KEY `customer_id` (`customer_id`),
  ADD KEY `order_date` (`order_date`);

--
-- Indexes for table `order_contents`
--
ALTER TABLE `order_contents`
  ADD PRIMARY KEY (`oc_id`),
  ADD KEY `order_id` (`order_id`),
  ADD KEY `print_id` (`print_id`),
  ADD KEY `ship_date` (`ship_date`);

--
-- Indexes for table `prints`
--
ALTER TABLE `prints`
  ADD PRIMARY KEY (`print_id`),
  ADD KEY `artist_id` (`artist_id`),
  ADD KEY `print_name` (`print_name`),
  ADD KEY `price` (`price`);

--
-- AUTO_INCREMENT for dumped tables
--

--
-- AUTO_INCREMENT for table `artists`
--
ALTER TABLE `artists`
  MODIFY `artist_id` int(10) UNSIGNED NOT NULL AUTO_INCREMENT;

--
-- AUTO_INCREMENT for table `customers`
--
ALTER TABLE `customers`
  MODIFY `customer_id` int(10) UNSIGNED NOT NULL AUTO_INCREMENT;

--
-- AUTO_INCREMENT for table `orders`
--
ALTER TABLE `orders`
  MODIFY `order_id` int(10) UNSIGNED NOT NULL AUTO_INCREMENT;

--
-- AUTO_INCREMENT for table `order_contents`
--
ALTER TABLE `order_contents`
  MODIFY `oc_id` int(10) UNSIGNED NOT NULL AUTO_INCREMENT;

--
-- AUTO_INCREMENT for table `prints`
--
ALTER TABLE `prints`
  MODIFY `print_id` int(10) UNSIGNED NOT NULL AUTO_INCREMENT;
COMMIT;

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
 

 

 

ecommerce.sql

[Larry]

Thanks for the nice words! It is appreciated! Unfortunately I'm not sure what's going on with that error message. It looks like it's suggesting that there's a problem with order_contents.print_id as a PRIMARY KEY but it's not a PRIMARY KEY and there's nothing in the SQL you posted that makes it a PRIMARY KEY. 

I've not seen this before. I'd double-check that the created database in phpMyAdmin matches the description put forth in the book. 

Thanks again!